Current and former Comcast employees spoke up about the retention department, and the truth is pretty annoying. When you want to cancel your account, Comcast's retention department is charged with squeezing you for any amount of money they can before disconnecting your service.

"We locked down the ability for most customer service reps to disconnect accounts," a billing systems manager who worked for Comcast from 2008 to 2013 told The Verge. "We queue the calls for customers looking to disconnect to a retention team who are authorized to give more deeply discounted products to keep subscribers. Even if the subscriber disconnects cable, maybe we can keep them on Internet or voice."

Retention reps actually have a 13-step list they have to follow in order to cancel your account. This includes steps like "Clarify reason for call," "Relate and empathize" and "Overcome objections." Basically, they're trying to gather as much info about you as possible, so they can argue against your reasons for canceling and keep you as a customer.

If you're canceling with Comcast, there are a few scenarios when the company considers you a lost cause. According to the Comcast guidelines, your business can't be saved if you're moving in with another Comcast customer, moving to an area not served by Comcast, don't know where you're moving to or the account holder is dead.